– Request a copy through your institutional library.
Categorize media based on historical failure rates to determine which products require rigorous user testing and which do not.
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These exemptions are based on comprehensive studies demonstrating that the rate of failure for these media is extremely low. How to Access CLSI M22-A3 clsi m22a3 pdf free
: This revision significantly expanded the list of media exempt from routine user quality control based on high performance history.
Are you preparing for a specific (e.g., CAP, CLIA, or ISO)? Share public link
Verify that the media was transported under proper temperature conditions and is stored correctly in the laboratory. – Request a copy through your institutional library
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A highly valuable list of high-quality, stable media types that laboratories do not need to re-test upon receipt, provided the manufacturer fulfills specific quality criteria. Share public link Verify that the media was
The CLSI M22A3 guidelines are a critical resource for clinical laboratories and healthcare professionals involved in antimicrobial susceptibility testing. The guidelines provide a standardized approach to testing, ensuring accuracy, reliability, and comparability of results. While accessing the CLSI M22A3 PDF free may require some effort, it is essential to ensure that you are using the most up-to-date and accurate guidelines for antimicrobial susceptibility testing.
: Today, the industry has moved toward an Individualized Quality Control Plan (IQCP) . Organizations like the American Society for Microbiology (ASM) now provide templates that broaden these concepts, replacing the older M22-A3 standard with risk-based assessments that still ensure patient safety. How to Access CLSI M22-A3
The standard's core principle is that the retesting of commercially prepared microbiological culture media is unnecessary for those media that have demonstrated proven reliability. The categorization of media that do not require retesting by the user is based on quality control data collected from surveys of clinical laboratories enrolled in the bacteriology proficiency-testing program conducted by the College of American Pathologists (CAP). These media types are well established for the recovery of clinically significant microorganisms. The standard applies to all commercial media listed in Table 2 of the document, regardless of packaging, plate, or tube design.
Based on the information provided in this article, we recommend the following:
: It provides protocols for maintenance of control organisms and specific "user" QC steps to ensure that media has not been compromised during shipping or storage. Accessing the Document